Right-angled boring-bit brace.



No. 64I,685. Patented Ian. 23, I900. G. 'A. FOGG.

(No Model.)

amewto z QWMW ohazzedflm $6 47 652mm 6% QWL OH. to

m: umzms ms co, wmo-uma. wmmumu. o. C

. Nrrsn STATES ATENT Fries.

RIGHT-ANGLED BORING-BIT BRACE.

SPECIFICATION forming part of Letters Patent No. 641,685, dated Jannary 23, 1900. A pli tion filed November 11-, 1899. Serial No. 736 ,719. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES A. FOGG, a citizen of the United States, residing at Burnhani, Waldo county, Maine, have invented certain new and useful Improvements in Right-Angled Boring-Bit Braces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanyingdrawings, and to letters of reference marked thereon, which form a part of this specification. V

This invention relates to new and useful improvements in bit-stocks, and especially to a stock so arranged that the operator can bore a hole at right angles to the direction of boring holes with ordinary bits, thus making it possible to use the instrument in places which are inaccessible to a person using the ordinary straight boring-bit stock.

More specifically, the present invention resides in the provision of a suitable rack,which also serves as a handle, at each end of which is journaled a rotary shaft, one of which carries a bit-socket and the other being squared to fit the socket of an ordinary bit-stock, each of said shafts having universal-joint connection with a short shaft having a bearing at the end of one of the arms of the rack.

To these ends and to such others as the invention may pertain the same consists, further, in the novel construction, combination, and adaptation of parts, as will be hereinafter more fully described, and then specifically defined in the appended claims.

My invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this application, and in which drawings-=- Figure 1 is a perspective View of my invention. Fig. 2 is a detail view taken through one of the universal joints.

Reference now being had to the details of the drawings by letter, A designates a rack having its outer margin curved, as shown, each end of said curved portion being apertured, and at the middle portion of the rack is a substantially right-angled arm 13, also provided with an aperture at its end. At one end of the rack a stub-shaft C is journaled, said shaft carrying a bit-socket D, carrying a wing tightening nut E. This socket is outside the end of the rack, and on the opposite end of said shaft 0 is keyed the forked meniber G, to the forked arms of which is pivoted a pin H, on which is journaled the rotary member J of the universal joint, which latter member has diametrically oppositely disposed bearing pins or screws K, to which the forked arms L of the member M are pivoted. This member M has a socket N at one end in which one end of the shaft P is keyed, said shaft being mounted to rotate in the apertured end of the right-angled arm B. The other end of said shaft P is keyed in a socket in a rotary forked member Q, similar to said member M, and pivoted to the arms of member Q are pins S, carried by the rotary joint-block B. This block R carries also two other pivot-pins T, diametrically opposite each other, which pins T have bearings in the arms V of the socket member V. This latter member V is keyed to the inner end of the turning shaft W, which has a collar W thereon and is mounted in the apertured end of the rack. The free end of said turning shaft W is slightly tapered and squared, so as to fit an ordinary bit-socket.

From the foregoing, when taken in connection with the drawings forming a part of this application, it will be seen that the rack forms a convenient hold for the operator while operating the device and can be easily held in places inaccessible to the ordinary bit-stocks.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

1. A right-angled boring-bit-stock brace, consisting of a rack of substantially anchor shape, the ends of which are apertured, shafts mounted to rotate in said apertures, the bitsocket and universaljoint connections between the shafts set at angles to one another, as set forth.

2. Aright-angledboring-bitbrace,comprisin g in combination with the rack with curved portion apertured at its ends, the right-angled arm with apertured end, the shaft mounted at one end of the rack, and socket keyed to In testimony whereof I affix my signature rotate with said shaft, the shaft journaled in in the presence of two Witnesses.

the aperture at the end of said ri ht-an led arm, the shaft with squared end and provided CHARLES FOGG' 5 with a collar, and the universal-joint connec- \Vitnesses:

tions between the shafts, as shown and for WVM. H. SPAULDING,

the purpose set forth. A. F. DRUMMOND. 

